Glass-door lock



Jan. 11, 1944. F. K. HEYER GLASS DOOR LOCK Filed Aug. 16. 194.,

1 INVENTOR MM, ATTORNEY Patented Jan. 11, 1944 UNITED STATES PATENT OFFICE 2,338,851 GLASS-DOOR LOCK Application-August 16, 1941, Serial No. 407,149

2 Claims.

This invention relates to a door lock andmore particularly to a lock for doors of the. type in which it is undesirable or impossible to mount a lock of conventional design.

Even more particularly, my inventionrelates to a lock especially adapted for use with hardened glass doors. Such hardened glass doors are incapable of being out once they are hardened, so that the mounting of a lock on such doors, presents a considerable manufacturing problem; By using the lock of my invention, it is'po'ssible to lock such hardened glass doors without complicated and costly lo'ck'installations.

As a feature of my invention; I utilizea lock which is readily assembled and removed relatively to a fioor'plate over which swings the' door or doors to be locked. As a further feature of my invention, my door lock is adapted to be locked in assembled relation to" afloor plate through manipulation of a key operated means mounted therein, and to be secured ina-ssembled and locked relation to the floor plate'while preferably being adapted for some pivotalmovement on the floor plate to adjust itself toparticular closed positions of the door or doors to be locked.

As still a further feature of my inventior the floor plate is adapted for.- cooperation; withtwo locks, one for each faceof: the doorqordoors to be locked, the entire assembly being. adapted for. use on the many varied types of installations. which are possible, and which are found in existing buildings.

I have thus described my invention generally in order that the operation and construction thereof to be hereinafter presented, may be more clearly understood. Naturally, the conception on which my invention is based, may be embodied in forms other than that which I shall hereinafter show and describe, so that my patent claims. should not be unduly limited in scope.

Referring now to the drawing, Fig; 1' is a front view of a pair of doors showing my lock in looking relation thereto. Fig. 2 is a perspective View of a pair of doors adapted tobe lockeduby'a pair of door locks embodying my invention. Figs; 3 and 4 are respectively sections taken along lines 3-3 and 44 of Fig. 1.

Referring now more particularly to the drawing and especially Fig. 1, I show there a-pair of swinging glass doors l and H. To the upper and lower inside corners of the doors there are secured hinge mounting plates IZ-ofusual construction, whereby the doors are mounted for swinging movement relatively to the door frame [3. In the actual manufacture of hardened glass doors, the hinge mounting members I! are assembled prior to the hardening of the glass doors, it being impossible to cut the glass once it is hardened without completely destroying it, all as is known to those skilled in the art.

It will be now appreciated that to install lock units in the doors l0 and H, would require the addition of further structural elements, and the further cutting of the doors, all of which would have to be done prior to the hardening of. the doors. Since each type of lock installation is dependent on the particular door installation, and since there are so very many types of doorinstallations, it is readily seen that it is dimcult to maintain a stock of finished doors equipped'with locks to meet all possible situations. Through the utilization of my invention, it is unnecessary to mount a lock on either of the doors Wand l l, thereby eliminating the necessity of maintaining a stock of doors equipped with locks to meet various installation requirements. I believe that this advantageous feature ofmy invention will now be quite clear to those skilled in the art.

Referring now more particularly to Figs. 2, 3 and 4, it will be noted, that the doors l0 and H swing relatively to a floor l4 and that the lower edges of the doors are in close juxtaposition to the floor surface so asto eliminate drafts. A floor or socket plate It is secured to the floor l4 and lies with its upper surface I? in alignment with the surface of the floor itself. Aportion of the floor or socket plate 15 extends beyond'each face of the doors I0 and H, when the: doors are in their closed position illustrated best in Figs. 2, 3 and 4. Socket openings it are formed in the plate I5 at each side of the closed positions of the doors, each of these socket-openings l8 being in alignment with an opening i9 in the floor Hi.

For cooperation with each of socket openings I8, I employ the winged'bolt 260i a locking member 2i. This looking member 25' preferably comprises an abutment portion 22 and a plate portion 23, with a pin tumbler cylinder 2d held fixediwithin the abutment portion 22. The key plug 25 of the cylinder 24 is preferably formed for rotation with the boltZEl, when the key plug is released by a key, all in a manner which will be quite apparent to those skilled in the art and which forms no part of this invention; A dust cover 26 is pinned at 27 to the cylinder lock 2-'l"for rotation into position to cover and protect the key plug 25, all of which will be understood by'those skilled in the art. a

The plate portion 23 of the locking member. 21 is preferably equipped with a resilient facing 28 adapted to be applied to the faces of doors l0 and II, when the locking member 2 is in locking position as illustrated in Figs. 3 and 4. It will now be quite obvious that with the doors If] and H in their position of Fig. 2, the locking member 2| may be readily assembled relatively to the socket plate through the insertion of the winged bolt into the socket l8 and with the plate portion 23 fitted against the faces of the doors, after which, the key plug 25 and the bolt 20 are rotated together from the position of Fig. 2 to the position of Figs. 3 and 4, or approximately 90 degrees. This positions the winged bolt 20 relatively to socket 18 so that the locking member 2| cannot be lifted upwardly out of looking position, all of which will be now quite apparent. The key plug 25, of course, locks the bolt against rotation relatively to the locking member 2 l It will, moreover, be appreciated that with the door locking member or members 2| assembled relatively to the doors l0 and H, it is possible to rotate the door locking members so that they may properly align their plate portions 23 to the faces of the doors. This movement will not disturb the locking relation between the winged bolts 20 and the sockets it? Of the floor or socket plate l5. Those skilled in the art will appreciate that it requires a rotation of 90 degree to rotate the winged bolts out of locking position, and that such rotation may only be imparted thereto by rotation of the key plug 25 to the position of Fig. 2 from the position of Figs. 3 and 4.

Those skilled in the art will now appreciate the adaptability of my invention to various glass door installations, but, it may be wel1 to describe its action in a typical and rather common installation, as for example, the doors of Fig. 2 which are of a type adapted for outward and inward swinging movement. There, the proprietor on leaving the store, will first lock to the floor plate [5, an inside locking member designated by reference numeral 2I in Fig. 2. He will then leave the store through swinging one or the other of the doors l0 and H, while holding the locking member 2| in his hand. The doors [0 and l I will nOw be allowed to close against the plate portion 23 of the locking member 2I or into their posibe readily applied to the floor plate !5 as Was already described, leaving the pair of doors securely locked from the inside and outside as seen in Figs. 3 and 4.

Should the proprietor of the store desire to lock the doors against inward swinging while allowing the doors to swing outwardly, it is obvious he will lock the member 21 relatively to the floor or socket plate l5, but will not apply the looking member 2| to the floor plate. Thedoors l0 and l I will now be adapted for outward swinging movement but will not be capable of swinging inwardly.

It will be further appreciated that where but one glass door is used, the socket or floor plate 15 is mounted merely under that one door, and the operation of the locking members is exactly the same as has heretofore been described except that only one door is controlled.

It is further obvious that in some installations,

where economy is desired, one of the locking and l I out of closed position, the lock member 2 I may be assembled relatively to the socket opening 18 by vertical movement of the bolt 20 into the socket l8, and then by rotation of the entire locking member. In other Words, the engagement to be made is in the nature of a bayonet joint. Thereafter, the two doors I 0 and I I may be locked by the outside locking member 21, just as has already been shown and described. It is thought that the operation and general structure of my invention will now be clearly understood.

I now claim:

1. A locking means for a door wherein a looking plate i mounted in the floor beneath the door and said plate is provided with a wing bolt opening at each side of the door for receiving the wing bolt of a locking member adapted to lie juxtaposed to the face of the door to prevent swinging thereof, said locking member comprising a casing portion for housing a key operated locking mechanism, a pair of oppositely extending wing portions secured to said casing portion to form an integral part thereof, a key rotated element forming part of said ke operated locking mechanism and rotatable relatively to said casing portion when key operated and normally locked to said casing portion for movement bodily therewith, a wing bolt rotatable with said key rotated element relatively to said casing, said wing bolt being adapted for entr into said wing bolt opening in said locking plate and for rotation thereafter relatively to said opening and said casing into locking relation to said locking plate, said wing bolt opening being so related to said wing bolt that substantial rotation may thereafter be imparted to said wing bolt and locking member as a unit by the door without bringing said wing bolt into release alignment with said wing bolt opening.

2. A locking means for a door wherein a looking plate is mounted in the floor beneath the door and said plate is provided with a wing bolt opening at each side of the door for receiving the wing bolt of a locking member adapted to lie juxtaposed to the face of the door to prevent swinging thereof, said locking member comprising a casing portion for housing a key operated locking mechanism, a pair of oppositely extending lateral wings secured to said casing portion to form an integral part thereof, a key rotated element forming part of said key operated lockin mechanism and rotatable relatively to said casing portion when key operated and normally locked to said casing portion for movement bodily therewith, a wing bolt rotatable with said key rotated element relatively to said casing and normally locked with said key rotated element for rotation with said casing, said wing bolt bein adapted for entry into a wing bolt opening in said locking plate and for rotation thereafter with said key rotated element relatively to said locking plate and said casing into locking relation to said looking plate while said lateral wings are in alignment with the door, said wing bolt opening being so related to said wing bolt that substantial rotation may thereafter be imparted to said wing bolt and locking member as a unit without bringing said wing bolt into release alignment with said wing bolt opening, said locking member and door mutually interlocking through said laterally extending wings to prevent rotation of said wing bolt with said locking member into release alignment with said wing bolt opening.

7 FREDERIC K. HEYER. 

